If nobody has enabled the relay, we're not comunicating with GuC, which
means that the stats don't have any meaning. Let's also remove interrupt
counter and tidy the debugfs formatting.
v2: Correct stats accounting (Sagar)
Signed-off-by: Michał Winiarski <michal.winiarski@xxxxxxxxx>
Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@xxxxxxxxx>
Cc: Sagar Arun Kamble <sagar.a.kamble@xxxxxxxxx>
Cc: Michal Wajdeczko <michal.wajdeczko@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_debugfs.c | 45 ++++++++++++++++++++++++------------
drivers/gpu/drm/i915/intel_guc.c | 5 +---
drivers/gpu/drm/i915/intel_guc_log.c | 22 +++++++++---------
drivers/gpu/drm/i915/intel_guc_log.h | 10 ++++----
4 files changed, 48 insertions(+), 34 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index d29bacb1f308..94516ab4eaed 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -2326,30 +2326,45 @@ static int i915_guc_load_status_info(struct seq_file *m, void *data)
return 0;
}
+static const char *
+stringify_guc_log_type(enum guc_log_buffer_type type)
+{
+ switch (type) {
+ case GUC_ISR_LOG_BUFFER:
+ return "ISR";
+ case GUC_DPC_LOG_BUFFER:
+ return "DPC";
+ case GUC_CRASH_DUMP_LOG_BUFFER:
+ return "CRASH";
+ default:
+ MISSING_CASE(type);
+ }
+
+ return "";
+}
+
static void i915_guc_log_info(struct seq_file *m,
struct drm_i915_private *dev_priv)
{
struct intel_guc *guc = &dev_priv->guc;
+ enum guc_log_buffer_type type;
- seq_puts(m, "GuC logging stats:\n");
-
- seq_printf(m, "\tISR: flush count %10u, overflow count %10u\n",
- guc->log.flush_count[GUC_ISR_LOG_BUFFER],
- guc->log.total_overflow_count[GUC_ISR_LOG_BUFFER]);
-
- seq_printf(m, "\tDPC: flush count %10u, overflow count %10u\n",
- guc->log.flush_count[GUC_DPC_LOG_BUFFER],
- guc->log.total_overflow_count[GUC_DPC_LOG_BUFFER]);
-
- seq_printf(m, "\tCRASH: flush count %10u, overflow count %10u\n",
- guc->log.flush_count[GUC_CRASH_DUMP_LOG_BUFFER],
- guc->log.total_overflow_count[GUC_CRASH_DUMP_LOG_BUFFER]);
+ if (!intel_guc_log_relay_enabled(guc)) {
+ seq_puts(m, "GuC log relay disabled\n");
+ return;
+ }
- seq_printf(m, "\tTotal flush interrupt count: %u\n",
- guc->log.flush_interrupt_count);
+ seq_puts(m, "GuC logging stats:\n");
seq_printf(m, "\tRelay full count: %u\n",
guc->log.relay.full_count);
+
+ for (type = GUC_ISR_LOG_BUFFER; type < GUC_MAX_LOG_BUFFER; type++) {
+ seq_printf(m, "\t%s:\tflush count %10u, overflow count %10u\n",
+ stringify_guc_log_type(type),
+ guc->log.stats[type].flush,
+ guc->log.stats[type].overflow);
+ }
}
static void i915_guc_client_info(struct seq_file *m,
diff --git a/drivers/gpu/drm/i915/intel_guc.c b/drivers/gpu/drm/i915/intel_guc.c
index cab158e42577..3e2f0f8503ed 100644
--- a/drivers/gpu/drm/i915/intel_guc.c
+++ b/drivers/gpu/drm/i915/intel_guc.c
@@ -388,12 +388,9 @@ void intel_guc_to_host_event_handler(struct intel_guc *guc)
spin_unlock(&guc->irq_lock);
if (msg & (INTEL_GUC_RECV_MSG_FLUSH_LOG_BUFFER |
- INTEL_GUC_RECV_MSG_CRASH_DUMP_POSTED)) {
+ INTEL_GUC_RECV_MSG_CRASH_DUMP_POSTED))
queue_work(guc->log.relay.flush_wq,
&guc->log.relay.flush_work);
-
- guc->log.flush_interrupt_count++;
- }
}
int intel_guc_sample_forcewake(struct intel_guc *guc)
diff --git a/drivers/gpu/drm/i915/intel_guc_log.c b/drivers/gpu/drm/i915/intel_guc_log.c
index 7c4339dae534..a72fe4a369f4 100644
--- a/drivers/gpu/drm/i915/intel_guc_log.c
+++ b/drivers/gpu/drm/i915/intel_guc_log.c
@@ -171,22 +171,22 @@ static void *guc_get_write_buffer(struct intel_guc *guc)
return relay_reserve(guc->log.relay.channel, 0);
}
-static bool guc_check_log_buf_overflow(struct intel_guc *guc,
+static bool guc_check_log_buf_overflow(struct intel_guc_log *log,
enum guc_log_buffer_type type,
unsigned int full_cnt)
{
- unsigned int prev_full_cnt = guc->log.prev_overflow_count[type];
+ unsigned int prev_full_cnt = log->stats[type].sampled_overflow;
bool overflow = false;
if (full_cnt != prev_full_cnt) {
overflow = true;
- guc->log.prev_overflow_count[type] = full_cnt;
- guc->log.total_overflow_count[type] += full_cnt - prev_full_cnt;
+ log->stats[type].overflow = full_cnt;
+ log->stats[type].sampled_overflow += full_cnt - prev_full_cnt;
if (full_cnt < prev_full_cnt) {
/* buffer_full_cnt is a 4 bit counter */
- guc->log.total_overflow_count[type] += 16;
+ log->stats[type].sampled_overflow += 16;
}
DRM_ERROR_RATELIMITED("GuC log buffer overflow\n");
}
@@ -221,7 +221,7 @@ static void guc_read_update_log_buffer(struct intel_guc *guc)
mutex_lock(&guc->log.relay.lock);
- if (WARN_ON(!guc->log.relay.buf_addr))
+ if (WARN_ON(!intel_guc_log_relay_enabled(guc)))
goto out_unlock;
/* Get the pointer to shared GuC log buffer */
@@ -259,8 +259,8 @@ static void guc_read_update_log_buffer(struct intel_guc *guc)
full_cnt = log_buf_state_local.buffer_full_cnt;
/* Bookkeeping stuff */
- guc->log.flush_count[type] += log_buf_state_local.flush_to_file;
- new_overflow = guc_check_log_buf_overflow(guc, type, full_cnt);
+ guc->log.stats[type].flush += log_buf_state_local.flush_to_file;
+ new_overflow = guc_check_log_buf_overflow(&guc->log, type, full_cnt);
/* Update the state of shared log buffer */
log_buf_state->read_ptr = write_offset;
@@ -321,7 +321,7 @@ static void capture_logs_work(struct work_struct *work)
guc_log_capture_logs(guc);
}
-static bool guc_log_relay_enabled(struct intel_guc *guc)
+bool intel_guc_log_relay_enabled(struct intel_guc *guc)
{
return guc->log.relay.buf_addr != NULL;
}
@@ -555,7 +555,7 @@ int intel_guc_log_relay_open(struct intel_guc *guc)
mutex_lock(&guc->log.relay.lock);
- if (guc_log_relay_enabled(guc)) {
+ if (intel_guc_log_relay_enabled(guc)) {
ret = -EEXIST;
goto out_unlock;
}
@@ -623,7 +623,7 @@ void intel_guc_log_relay_close(struct intel_guc *guc)
flush_work(&guc->log.relay.flush_work);
mutex_lock(&guc->log.relay.lock);
- GEM_BUG_ON(!guc_log_relay_enabled(guc));
+ GEM_BUG_ON(!intel_guc_log_relay_enabled(guc));
guc_log_unmap(guc);
guc_log_relay_destroy(guc);
mutex_unlock(&guc->log.relay.lock);
diff --git a/drivers/gpu/drm/i915/intel_guc_log.h b/drivers/gpu/drm/i915/intel_guc_log.h
index 9b1257ea2673..8804c5c27409 100644
--- a/drivers/gpu/drm/i915/intel_guc_log.h
+++ b/drivers/gpu/drm/i915/intel_guc_log.h
@@ -51,10 +51,11 @@ struct intel_guc_log {
u32 full_count;
} relay;
/* logging related stats */
- u32 flush_interrupt_count;
- u32 prev_overflow_count[GUC_MAX_LOG_BUFFER];
- u32 total_overflow_count[GUC_MAX_LOG_BUFFER];
- u32 flush_count[GUC_MAX_LOG_BUFFER];
+ struct {
+ u32 sampled_overflow;
+ u32 overflow;
+ u32 flush;
+ } stats[GUC_MAX_LOG_BUFFER];
};
int intel_guc_log_create(struct intel_guc *guc);
@@ -65,5 +66,6 @@ int intel_guc_log_level_set(struct intel_guc *guc, u64 control_val);
int intel_guc_log_relay_open(struct intel_guc *guc);
void intel_guc_log_relay_close(struct intel_guc *guc);
void intel_guc_log_relay_flush(struct intel_guc *guc);
+bool intel_guc_log_relay_enabled(struct intel_guc *guc);
#endif
--
2.14.3
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